20202221201 has 16 divisors (see below), whose sum is σ = 21672541440. Its totient is φ = 18763480320.

The previous prime is 20202221197. The next prime is 20202221203. The reversal of 20202221201 is 10212220202.

It is a cyclic number.

It is not a de Polignac number, because 20202221201 - 2² = 20202221197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20202221203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4936166 + ... + 4940256.

It is an arithmetic number, because the mean of its divisors is an integer number (1354533840).

Almost surely, 2^20202221201 is an apocalyptic number.

It is an amenable number.

20202221201 is a deficient number, since it is larger than the sum of its proper divisors (1470320239).

20202221201 is a wasteful number, since it uses less digits than its factorization.

20202221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7864.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20202221201 its reverse (10212220202), we get a palindrome (30414441403).

Subtracting from 20202221201 its reverse (10212220202), we obtain a palindrome (9990000999).

The spelling of 20202221201 in words is "twenty billion, two hundred two million, two hundred twenty-one thousand, two hundred one".